To make room on the 25-man roster, the D-backs designated infielder Josh Wilson for assignment.

With Collmenter likely able to pitch again in a couple of days, it seems Spruill's stay will be a short one, and the team could activate second baseman Aaron Hill on Sunday or Tuesday to take Spruill's place.

Spruill, the D-backs' No. 8 prospect according to MLB.com, got the nod over top prospect Tyler Skaggs, largely because of the role he would be filling.

"I think we see Spruill better out of the bullpen, and there was less comfort with Skaggs coming out of the bullpen," Gibson said.

Spruill was acquired in January as part of the deal that sent Justin Upton to Atlanta.

Steve Gilbert is a reporter for MLB.com. Follow him on Twitter @SteveGilbertMLB. This story was not subject to the approval of Major League Baseball or its clubs.